Centrifugal spray dryer

Abstract

The utility model discloses a centrifugal spray dryer which comprises a drying tower, a jacket is arranged on the outer wall of the drying tower, a containing cavity is formed between the jacket and the outer wall of the drying tower, the containing cavity is in a circular ring shape, heat conduction liquid is contained in the containing cavity, a heat dissipation pipe is arranged in the containing cavity, and the heat dissipation pipe is spirally arranged from top to bottom. According to the centrifugal spray dryer, the jacket and the heat conduction liquid are adopted, heat of the wall of the drying tower is rapidly absorbed, the temperature of the wall of the drying tower is controlled, the temperature of the wall of the drying tower is stabilized at the temperature at which powder adhering to the wall cannot be coked, and the powder adhering to the wall of the drying tower is prevented from being continuously subjected to high temperature to form coke powder.

Description

TECHNICAL FIELD

[0001] The utility model relates to spray drying technology, specifically a centrifugal spray drying machine. BACKGROUND

[0002] Spray drying is a method of applying systematized technology to material drying, which is to make the dilute material into thin film, fine wire or liquid drop by centrifugal force of high-speed rotation of a disc in horizontal direction, and then to disperse into very small liquid drop by friction, resistance and tearing of air, so as to obtain dry product. The method can directly dry solution and emulsion into powder or granular product, and can save evaporation and crushing process. Centrifugal spray is to give centrifugal force to solution by high-speed rotation of a disc in horizontal direction, so as to make it to be thrown out to form thin film, fine wire or liquid drop, and then to be dispersed into very small liquid drop by friction, resistance and tearing of air.

[0003] The existing centrifugal spray drying machine is prone to cause wall sticking phenomenon of the tower wall of the drying tower due to the semi-wet material. The reason is that the sprayed mist contacts the tower wall before reaching the surface drying, and the tower wall has high temperature for long time, i.e. similar to the temperature of hot air, which can make the powder adhered to the tower wall to be quickly dried, and the powder adhered to the tower wall can be converted into coke powder for long time heating, which can cause color change of the product, black particles, and serious influence on product quality. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the defects of the prior art, the utility model provides a centrifugal spray drying machine, which can cool the tower wall of the drying tower to avoid the powder adhered to the tower wall from being continuously heated at high temperature to form coke powder.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical scheme: a centrifugal spray drying machine, comprising a drying tower, a jacket is arranged on the outer wall of the drying tower, a containing cavity is arranged between the jacket and the outer wall of the drying tower, the containing cavity is annular, heat-conducting liquid is contained in the containing cavity, a heat dissipation pipe is arranged in the containing cavity, and the heat dissipation pipe is arranged in a spiral from top to bottom.

[0006] Preferably, the top of the drying tower is provided with a feeding pipe, an atomizing nozzle is arranged in the drying tower, the atomizing nozzle is located at the top center of the drying tower, the atomizing nozzle is communicated with the feeding pipe, and the bottom of the drying tower is provided with a discharging pipe.

[0007] Preferably, the jacket is provided with an air inlet and an air outlet on both sides, the air inlet is arranged at the top of the jacket, the air outlet is arranged at the bottom of the jacket, the air inlet is communicated with the top end of the heat dissipation pipe, and the air outlet is communicated with the bottom end of the heat dissipation pipe.

[0008] Preferably, the top of the jacket is provided with a pressure relief port, and the bottom of the jacket is provided with a water supplement port.

[0009] Preferably, the accommodating cavity is uniformly provided with fins in the circumferential direction, the fins are vertically arranged, and the two sides of the fins are respectively abutted against the inner wall of the jacket and the outer wall of the drying tower.

[0010] Preferably, the heat dissipation pipe passes through the fin.

[0011] In conclusion, the centrifugal spray dryer has the following technical effects:

[0012] The centrifugal spray dryer of the utility model adopts a jacket and heat-conducting liquid to quickly absorb the heat of the tower wall of the drying tower, controls the temperature of the tower wall of the drying tower, stabilizes the temperature of the tower wall of the drying tower at a temperature at which the wall-adhered powder will not be carbonized, and avoids the powder adhered to the tower wall from continuously being subjected to high temperature to form carbon powder. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the centrifugal spray dryer of the utility model;

[0014] Figure 2 is a structural schematic view of the centrifugal spray dryer of the utility model;

[0015] Figure 3 is a structural schematic view of the jacket of the centrifugal spray dryer of the utility model;

[0016] The accompanying drawings of the specification are explained as follows: 1, drying tower; 2, feed pipe; 3, atomizing nozzle; 4, discharge pipe; 5, jacket; 6, heat dissipation pipe; 7, air inlet; 8, air outlet; 9, fin; 10, pressure relief port; 11, liquid supplementing port. DETAILED DESCRIPTION

[0017] The utility model is further explained in detail in combination with the drawings.

[0018] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as the modification is within the scope of the claims of the utility model, the modification is protected by the patent law.

[0019] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model by indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0021] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] Embodiment one:

[0024] As Figure 1 -3 shows a centrifugal spray dryer, which comprises a drying tower 1, the outer wall of the drying tower 1 is provided with a jacket 5, the jacket 5 and the outer wall of the drying tower 1 are provided with a containing cavity, the containing cavity is annular, the containing cavity contains heat conducting liquid, the containing cavity is provided with a heat dissipation pipe 6, the heat dissipation pipe 6 is spirally arranged from top to bottom.

[0025] The heat dissipation pipe 6 is a spiral pipe, which can increase the contact area of the heat dissipation pipe 6 with the heat-conducting liquid and improve the heat dissipation efficiency.

[0026] The centrifugal spray dryer of the embodiment uses the jacket 5 and the heat-conducting liquid to quickly absorb the heat of the tower wall of the drying tower 1, controls the temperature of the tower wall of the drying tower 1, and stabilizes the temperature of the tower wall of the drying tower 1 at a temperature at which the wall-adhered powder does not carbonize, thereby avoiding that the powder adhered to the tower wall continuously receives high temperature to form carbon powder.

[0027] The drying tower 1 is provided with the feed pipe 2, and the drying tower 1 is provided with the atomizing nozzle 3.

[0028] The jacket 5 is provided with the air inlet 7 and the air outlet 8 on two sides, respectively.

[0029] The jacket 5 is provided with the pressure relief port 10 on the top and the liquid supplement port on the bottom.

[0030] The jacket 5 is provided with the pressure relief port 10 on the top and the liquid supplement port on the bottom.

[0031] The above description is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application are within the scope of the technical scheme of the present application.

Claims

1. A centrifugal spray dryer comprising a drying tower, characterized in that, The outer wall of the drying tower is provided with a jacket, a containing cavity is arranged between the jacket and the outer wall of the drying tower, the containing cavity is annular, heat-conducting liquid is contained in the containing cavity, and a heat dissipation pipe is arranged in the containing cavity and is arranged in a spiral from top to bottom.

2. A centrifugal spray dryer according to claim 1, characterized in that A feeding pipe is arranged at the top of the drying tower, an atomizing nozzle is arranged in the drying tower, the atomizing nozzle is arranged at the top center of the drying tower, the atomizing nozzle is communicated with the feeding pipe, and a discharging pipe is arranged at the bottom of the drying tower.

3. A centrifugal spray dryer according to claim 1, characterized in that Air inlets and air outlets are arranged on the two sides of the jacket respectively, the air inlets are arranged at the top of the jacket, the air outlets are arranged at the bottom of the jacket, the air inlets are communicated with the top end of the heat dissipation pipe, and the air outlets are communicated with the bottom end of the heat dissipation pipe.

4. A centrifugal spray dryer according to claim 1, wherein A pressure relief port is arranged at the top of the jacket, and a water supplement port is arranged at the bottom of the jacket.

5. A centrifugal spray dryer according to claim 1, wherein Fins are uniformly arranged in the containing cavity in the circumferential direction, the fins are arranged vertically, the two sides of the fins are abutted against the inner wall of the jacket and the outer wall of the drying tower respectively, and through holes are arranged at the top end and the bottom end of the fins.

6. A centrifugal spray dryer according to claim 5, characterised in that The heat dissipation pipe penetrates the fins.

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